Center vortex model for the infrared sector of Yang-Mills theory - Topological Susceptibility

Research paper by Michael Engelhardt

Indexed on: 18 Apr '00Published on: 18 Apr '00Published in: High Energy Physics - Lattice


A definition of the Pontryagin index for SU(2) center vortex world-surfaces composed of plaquettes on a hypercubic lattice is constructed. It is used to evaluate the topological susceptibility in a previously defined random surface model for vortices, the parameters of which have been fixed such as to reproduce the confinement properties of SU(2) Yang-Mills theory. A prediction for the topological susceptibility is obtained which is compatible with measurements of this quantity in lattice Yang-Mills theory.